High efficiency RF power amplifier designed with harmonic real-time active load-pull

被引：10
|
作者：
Cui, Xian [1 ]
Doo, Seok Joo [1 ]
Roblin, Patrick [1 ]
Strahler, Jeffrey [1 ]
Rojas-Teran, Roberto G. [1 ]
机构：
[1] Ohio State Univ, Dept Elect & Comp Engn, Columbus, OH 43210 USA
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2008年 / 18卷 / 04期
基金：
美国国家科学基金会;
关键词：
large signal network analyzer (LSNA); power added efficiency (PAE); power amplifier (PA); real-time active load-pull (RT-ALP);
D O I：
10.1109/LMWC.2008.918913
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this work, a high efficiency p-HEMT radio frequency power amplifier (PA) is designed using a new multiharmonic real-time active load-pull using the large signal network analyzer. This technique synthesizes a large set of instantaneous load mismatches to quickly find the optimal harmonic impedances, so as to achieve high PA efficiency in a shortened design cycle. At 2 GHz a demo power amplifier implemented with a p-HEMT demonstrated a power added efficiency (PAE) of 68.5% for 18.0 dBm output power, while achieving a maximum PAE of 75% below the 1 dB compression point for 18.6 dBm output power.
引用
收藏
页码：266 / 268
页数：3
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